49580581 has 4 divisors (see below), whose sum is σ = 49750092. Its totient is φ = 49411072.

The previous prime is 49580549. The next prime is 49580593. The reversal of 49580581 is 18508594.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47128225 + 2452356 = 6865^2 + 1566^2 .

It is a cyclic number.

It is not a de Polignac number, because 49580581 - 2⁵ = 49580549 is a prime.

It is a super-2 number, since 2×49580581² = 4916468024595122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49580681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84316 + ... + 84901.

It is an arithmetic number, because the mean of its divisors is an integer number (12437523).

Almost surely, 2^49580581 is an apocalyptic number.

It is an amenable number.

49580581 is a deficient number, since it is larger than the sum of its proper divisors (169511).

49580581 is a wasteful number, since it uses less digits than its factorization.

49580581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169510.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 49580581 is about 7041.3479533396. The cubic root of 49580581 is about 367.3701541990.

The spelling of 49580581 in words is "forty-nine million, five hundred eighty thousand, five hundred eighty-one".